Engineer's Mini Notebook- 555 Timer IC Circuits

Ф sarmer» _ cat. No. 276-5010
BK Radio fhaek

Engineer's
Mini-Notebook

555 Timer
IC Circuits

Forrest M. Mims III

THE SSG CONTAINS
ТАО 555 TIMERS.

GROUND 1
TRIGGER 2
OUT PUT 2
RESET 4
CONTROL V 5
THRES HOLD lo
DISCHARGE 7
V ë

SUPPLY VOLTAGE (Vec)
SUPPLY CURRENT (\сс=+5у)
SUPPLY CURRENT (Væc=+1SV)
OUTPUT CURRENT (MAXIMUM)
POWER DISSIPATION
OPERATING TEMPERATURE

1 VALUES Shown APPLY TO NESSS.

“ENGINEERS
MINI NOTEBOOK
555 CIRCUITS — jd

М + { | 45. i | ， ыр

FORREST M. MMS, ГГ
! i

ເ. | ເ ດວ |! ຊນກ. | Ыр
| FIRST PRINTING 77 1481 | | L L +

ETI TITI AT SilicoucEgrse Н — BOOK PE SB

| COPYRIGHT © 1984 BY FORREST M. MIMS, E?
| ALL RIGHTS RESERVED LY LH

E > -

prates 1 IN TRE. UNITED STATES. OF AMERICA |

i

pe ສກ БЕЯ — софа

PLEASE READ THIS. FIRST...

THIS Book 15 FØR ME ENTERTAIN MENT AND |
EDIFICATION OF ITS READERS. - WHILE REASONABLE |
CARE HAS BEEN EXERCISED WITH RESPECT TO

ITS ACCURACY, THE AUTHOR AND RADIO SHACK

ASSUME NO RESPONSIBILITY FOR ERRORS, OMISSIONS .

OR SUITABILITY OF 175 CONTENTS FØR ANY
APPLICATION, NOR 00 WE ASSUME ANY LIABILITY

FOR ANY | DAMAGES, RESULTING FROM USE OF

INFORMATION IN THIS BOOK. IT 15 YOUR

RESPONSIBILITY TO DETERMINE IF USE. SALE

OR MANUFACTURE ОЕ ANY DEVICE THAT `
INCORPORATES INFORMATION IN THIS Book

INFRINGES ANY PATENTS, COPYRIGHTS ОЁ

OTHER. RIG AHTS.

DUE. тр THE MANY. CUSTOMER INQUIRIES |
RECEIVED BY RADIO SHACK AND TAE AUTHOR ,

IT 1$ IMPOSSIBLE TO ANSWER REQUESTS FOR
ADP IMON AL INFORMATION | (CUSTOM CIRCUIT

. DESIGNS, TECHNICAL ADVICE, TROUBLE SHOOT ING
_ ADVICE, ' ETC). Bur THOUGH WE CANNOT

ACKNOWLEDGE INDIVIDVAL INQUIRIES, WE

.| WILL BE HAPPY TO RECEIVE ANY COMMENTS,
| IMPRESSIONS, SUGGESTIONS AND INFORMATION

ABOUT. SUSPECTED ERRORS IN THIS BOOK.

NAMES | iN ADVANCE To THOSE OF YOU
..MHO WRITE! | Вот PLEASE REMEMBER WE
WILL BE UNABLE TD RESPOND PERSON ALLY.

| ຈໃ, i ວຊ] Ero |

I

K

=

Ll

БЕ
ұт р مل‎
HS!

| 一 = S OR кале ousa Бели МЫШ БЕР: кыл: 95 шыр SND EZA Si ໆາງ
CONTENTS Hi
INTRODUCTION ITP
CIRCUIT. ASSEMBLY TIPS METTE
555 SPECIFICATIONS s T
555! BLOCK DIAGRAM БЇ
CIRCUITS EEL TTS
BASIC "oko srABLS |. ETT ສສຕ |
BASIC ASTABLE . | Н

J BOUNCEFREE SWITCH .

|; TOUCH ACTIVATED SWITCH
| TIMER PLUS RELAY `
CASCADED |, TIMER `

| ` INTERVALOMETER | |
MISSING PULSE . DETECTOR
EVENT. FAILURE ALARM .

^| VOLTAGE- CONTROLLED OSCILLATOR | | ,
PULSE , GENERATOR к

| AVDD. NOEL METRONOME |
‚1 ТОЧ. ORGAN) 1-1 e M |
| | CATED OSCILLATOR `
| | CHIRP GENERATOR

| ] 25 ТАТЕ TONE GENERATDR `
TONE BURST GENERATOR ,
SDUND EFFECTS GENERATOR

` INERARED | SECURITY ALARM - ວ”
| ANALOG LIGHTWAVE ` TRANSMITTER -
|. ANALOG LIGHTwAVE
1 ມ-1. . CONVERT ER

FREQUENCY | DIVIDER

FREQUENCY METER

STEPPED- TONE: DENER

LED FLASKER | | FEST
POWER FET LAMP DIMMER ່ , , |.
LIGHT / DARK. DETECTOR . Б 133

S BE et

تنب ال
'
Е $‏
I‏
|

INTRODUCTION

AND VERSATILE INTEGRATED CIRCUITS . EVER

BUILD TEST VERSIONS OF CIRCUITS ON PLASNC
| |SOLDERLESS BREADBOARD BEFORE MAKING THEM

FALSE. TRIGGERING . MIGHT | CAUSE | PROBLEMS, m

. [SEEMS TO MAGFUNCTION, PLACE A Oluf .
. CAPACITOR. ACROSS PINS. 8 Амр 1, А 1 АЕ .
|_| CAPACITOR MAY ALSO BE NECESSARY, РЕ 5oRE

| [COMPONENTS PLAY, | REMEMBER THAT THE.

THE SSS TIMER I$ ONE OF THE MOST POPULAR

PRODUCED. IT INCLUDES 23 TRANSISTORS, 2 00066
AND 16 RESISTORS ON А. SILICON CHIP INSTALLED
IN AN 8-PIN MINI DVAL-IN-LINE PACKAGE (DIP).
THE 556 IS А 14-PIN OIP ТААТ COMBINES TWO
SSS's ON Å SINGLE CHIP. ALSO AVAILABLE
ARE ULTRA-LOW POWER VERSIONS OF THE SSS.
THE 555 WAS TWD PRINCIPLE OPERATING MODES:

MOND STABLE MODE — IN THIS MDOE THE 555

FUNCTIONS AS A "ONE -SHOT." APPLICATIONS
INCLUDE TIMERS, MISSING PULSE DETECTION,
BoumcEFREE SWITCHES, TOUCH SWITCHES, ETC.

ASTABLE МОРЕ — ТАЁ 555 CAN OPERATE AS .
AN OSCILLATOR. USES INCLUDE LED AND LAMP `
FLASHERS, PULSE GENERATION, LOGIC CLOCKS, . `
ທ GENERATION, SECURITY ALARMS, ЕТС. `

CIRCUIT ASSEMBLY TIPS

i
l l i
dm -+ 一 一 个 -一 ， b
1 { i i
I I I
' ' å

PERMANENT. IN MONOSTABLE CIRCUITS WHERE

TIE PIN 5 TO GROUND VIA A 0.1 uF CAPACITOR. |
IF POWER LEADS ARE LONG OR IF А CIRCUIT |

ТО EXPERIMENT WITH. VALUES OF TIMING
RESISTORS AnD. CAPACITORS. THE BASIC | e
CIRCUITS On РР 6-7 EXPLAIN THE ROLE THESE ||

550 REPLACES TWO 5SS's. LOW-POWER

| VERSIONS OF mE SSS MAY REQUIRE SOME
REVISIONS TO STANDARD 555 CIRCUITS. -
FOR MORE TIPS, SEE THE RADIO SHACK 600!

ອ... Is STARTED. IN. ELE CT RONIGS, d

sa e ; 1 9" š * |] i P , Е Е 1 * Е * 1 省 1 rf Е 1
| І { | | i i ! i i Е i 1 i

н iE ос Kui аси RE Т -- --+--+- +--+- + - + 一 一 -一 一‏ —————— ا ا

| | | | | | i i i | І

РЕБЕ SPECIFICATIONS" 一 Å

-一 一 中 — ——

| SUPPLY VOLTAGE (Ved) p HS To ISV | ສສ |
| | supply CURRENT (VecstsV 3 To 6 lA , | ||
| || SUPPLY, CURRENT (Vcc* “”15ນ] па T9115 «A! | 1 | L
| | | ບກ CURRENT ‚| . 206 мА. (MAXIMUM) |...
| | POWER DISSIPATION . pa ww | | | | | |}
| OPERATING · TEMPERATURE ` 1 IQ fol ло* А +] |
| | í vALVES SHOWN APñMY To NESSS (& Pix າະເ
+] 112 рари CURRENT = 0..

اا

| INTERNAL BLOCK АСВ M-

— -- 4 - — - <

"тү "у" U il;
|
ສກບ USE ໃ” ? TOES а кыл чи
i

I
- --+-- + -一
I

I

i

+...

ເເ. E Um TE

- ! i ко | { <” Wm i EA
下 一 十 -9 一 一 一 一 人 一 十 + - - t TT 一 T... -$ 4 -一 一 | -———— - 一 一 ——4 o — TA

E. BASIC "MONOSTABLE | “CIRCUIT າ

ERSAN № Gs us) ມມ!

tt JE Jane! TRIGGER |

| : INPUT MOMEN-
| TRRILY LOW

10 RESET | |
RESET TIMING CYCLE，
OTHERWISE `
KEEP. RESET |
б AT 4 Мес» 4-

MONDSTABLE |
mous G ຂາ KE

E ZERE! L4
рыр» MAG И INDEPENDENT |

x, Port» . Ait of Mee). B ud.
NEGATIVE TRIGGER | PULSE. AT PIN 2 | TURNS
T] OFF A TRANSISTOR THAT OTHERWISE ` SHORTS CI .
1190 GROUND. ТАЕ OUTPUT THEN GOES HIGH AS i El
| C1 CHARGES THROUGH Ri. WHEN THÉ | CHARGE. |

ON C1 15 ?/3 Мес, WE 555 DISCHARGES СІ TD ||
- GROUND. THE. OUTPUT THEN GOES. FAT |. | |. ) Ж

| |
|
в
ا‎
| А
—
|

ШШ

29 A ເ, (ຈ.

TA ES | "> |). DO -i CE kar Е, ЗА 55, W
——— HL 一 一 十 一 一 一 全 $4 4—4 —— р}

` l | | à
j å - i - ——Y d -
MÀ - - -+--- — tel Y . A --+- - B4 I І i T: t
I 1 i í

BASIC ASTABLE - CIRCUIT - BEGÅ

Nec ເຣ тр Ny : ü

+1 = stilt -
+2 |= n p ci E

LLELLLLTITI LLL Esdegušugvie JR TE
| PE GE Ee se ໃ p e CIEE

| MERE PINS 2 AND | ARE [сёюнёстей ish me | EE

CIRCUIT ນາ. TRIGGER | ITSELF | BACH TIMING ` . E +-|
E T CYCLE, THEREBY | FUNCTIONING AS AN . OSCILLATOR, | | PE
L4 + ; CHARGES: THROUGH, R1 AND А2 BUT DISCHARGES ||
|. | TMROoGÁ R2, |186 CHARGE. ON 61 RANGES |
From 4/5 Мес. fo 2/3 ປແ, THE OSCILLATION | |
FREQUENCY I$ ` INDEPENDENT . oF Ves. kr KE

—

hI L. 7 EE A AD wet NER
e i ç } i R 1.1. h سل ا لت ل ا سا‎
I i
| | | Ж . ) І i

i
i

BOUNCEFREE SWITCH

+5 TO +15V

OUTPUT PULSE

open ແເ W
SL ,100ເ -

АСТ | VATED SWITCH н

2... dem
LO DUTOT PULSE | | 1

+5 TD t15V

DELAY
| jf ` |
TOUCH . RELEASE RR 225 Й
MAY. ALSO EE 19
WORK WHEN ，
ONLY PIN 2. | |

ນ JIS TOUCHED, | '
аза сада 9

EI l. l j l LAL LLL lod LLL -- ——————- fr
« Г I i i ' i Е

4

Å TIMER PLUS RELAY: EEH

N |
l ແທ 4 " N av $ үч i = i 9% + 5
+9V =
ü ыы L А - 4- - 4 Е . " i I l 中 å ~

4 i
t +- Y
—— | I
— a. — — — à ° š *

"ay ML av br - - -- ‚ -- -+ — aha
I
— a - x

- —

一 ~ ——a ---->.: -

I
i
— — — — — — >
l i i
|

= #рАріо shack 215-004 .

|. | CLOSING. S1 MOMENTARILY BEGINS A |
||! ITIMNG CYCLE, | THE | RELAY. (S ACTUATED |
|. | DURING | THÉ ENTIRE СУСЕ, RI AND 1 |
CONTROL TIME DELAY. C$ |PREVENTB |. | | , 1
FALSE | TRIGGERING.. D2 ABSORBS VOLTAGE |
i GENERATED BY RELAY Coll WHEN RELAY ປ .
IS SWITCHED OFF. USE. CAUTION- WHEN | | |
CONNECTING LINE - POWERED DEVICES TD 4
| RELAY CONNECTIONS. || 4—14

фе
i |

| i І |

l lš M

ا :+--->-- + -- 4—4

TYPICAL DELAYS (SE<ONDS) |

i * ч А i А i l
[| —— — еее. 一 一 ?一 一 一- -ຈ່- - - EE om +
u l I

l

| ] i | I | | i І

РК" -y | 4... + 二 一 -一 一 一 — MÀ -- +-- - .- 4

E -CASCADED TIMER MUERTE

rr

- > wu Edd Ns SEP , —
' { +
H I i i i i
ers MÀ
Е
سے‎ E sib -~-- 全 一- :>

TT EG ແ
$ å

ELT TAIT TAPAE TTE ;
IN |. | IN THEIR. ONE-SHOT MODE.
| GROUNDING ານເ TRIGGER. |

H E] ທຕ: tah ak en | INPUT | STARTS TIMER 1 WHICH °
Ix. d Lo THEN | STARTS TIMER 2. 1 | ! !

_ toonF| ່.ວ5 ເ

' I
` ii
à ! i I I
| | l ^ odios " e ШЕРНЕ
"- i i < + _ , . ec 4 - + ¿
I $ $ I
l າ ! Г i
+ q Y | | | |
; | be | L. oa. k. . i al
d

-— — =“ a5, ` -
m Ve وي‎

L:

i |
E CE EEN O — ra
o но < а me ..າ“-

І

مھ
i‏ |
І‏ |
Ла ФРА: АНН А‏
a‏ ساقس -- +-

1+ —

|

to 让 1 |

{ Р ССРУ ч J

+ | VER die

| | | |
LOL- | ГЕ 5 1
I

|

Ha

|

3 "RADIO SACK. 215-004 Е
TIMER 1 HE [CONNECTED As ASTABLE 187 d
OSCILLATOR. WHICH. OSCILLATES AT A ERE ale | $
DETERMINED BY R1 AND Сі. TIMER 2 IS A - E
СОМЕ = SHOT THAT DRIVES А RELAY МА Di. . m
TIMER 1 TRIGGERS TIMER 2. ONCE PER ` Seks. |
FOR 3 To 5 SECONDS. ملا‎ | ør:

м 4 i x k. І „4 i

TIMER. El
Сем 5)

|a!
| RELAY PULLED IN

TIME ປ 2
aen

up — — F MÀ

ໃ PULSE DETECTOR- кв

+5 TO "T | |

ແ £ ເນ ser
TIME DELAY.

- (VT aT TENDS |
тс}: ате UR | |
1. ..+...,
01 AF. AE EN

— |

SET. TIME | DELAY TD |-|
SLIGHTLY | EXCEED | —
TIME BETWEEN THE | _
INCOMING USES. |

| INGOMING . PULSES | CONTINUALLY RESET — A
-MÉ TIMING CYCLE. | A MISSING PULSE `

ພະ mé TIMING | CYCLE TO BE — I
COMPLETED, CHANGING THE OUTPUT. STATE. -

i
mM
үш e

І I

一 -个 E
—— —

Е
B

—

|

Е
سو ا ا‎
| H | I
' 1 { |
I i
Iu

| EORUM АЙ I
t
i ! ) i I
| І І І | |
ы р ກ еф اال‎ и
|
—4 — +
RE - QM

FAIL

Е
LT
/ENT

“> на

+— — —

一 一 一 和 一 一 一 人 一 一

ໄຣ |

1
Е
--+---

TIMIN G

ER will

f

— (900 9 — -er

| en
ISSS

POWER IS.
SET
BE ANY

AT a COMPLETED

С APPL

AE GE E

ü

i i T
I I
| i i L. ч

det dade

T

I
—

. SwrrcH.

Si CAN

LI.

I i
i :
~4

س

Hu
> 一 一 一 一 一 一 一 下 一 一 一

4—

І
|
— die

І

II

i

|

фи» 4 --ຈ- —— ------<---+---
l i
{ i

I
H
I

x

Г
一 一 一 一 -十 -一

THRESROLD

- -+- --- -:- $——

І i І
| — -—
i I
i i
ກ БЕРУ K

+

I

k. ТОЛ dit ا‎
Е
l
!
Е

= +

ЕС
i
س‎
t
i
Е
Е

— ^ t -

Е

E

— фф
B
Г

-— + < < < +
+ 一 一 一 一 一 |

一 一 一 一 -一 -

GO OB
H FREQUENCY “DIVIDER - rrt

. | iE ае ALSO ` ໃ.
SQUARES SLOWLY |
RISING INPUT PULSES,

າ
--
Е

= wa "T E
7 Р 1 ФА 2. ЦЕ РЧ а й
i I i H i

І I

i t

* + — ——Á—

I | | І

l I i .

i e $

” i f
e» Жл | |.
(d | І f |
Y pa 1
| '
| | | 1 i
РӘХ I ; б
1 -ERN = u 7 — +— - = 一 一
[| SE К | |
| І І | І i
} т и - i < 一 一 4F£— --
W š; L 2d
| |
ЮЕШ
И — —
b
|

l 1 i
—9— — pu -一 --+ ແ. 4.---.

EL EEE} ແຊ TYPLCAL Pi _ ກິ ທ

EI 822 25 Wa LT ງປ AND buTPVT WA!

Ei d B Sp: ——] FORMS SHOWN. | gd

pl lt LLY FUE, | Tourer FREQUENCY + .
TH IIO TL ma AE ИЕ INT. FREQUENCY.

I
-. “ຈ+- dr -.-
t

- -

|
|
|
|
L
| 4 IN AIS. CIRCUIT. THE 555. [CONNECTED Dui
i - AS | A ИУ t ur MERT T . ວາແ. |! |
ER ДА! TIMING. CYCLE | IS INITIATED BY Аю. INPUT. ` E
| | | PULSE | | SusEdvENT. INPUT PULSES HAVE | NO. Hi
EE _EFFECT | UNTIL. CYCLE \5 COMPLETED. (SHOWN —
H+ _ BELDW ARE TYPICAL INPUT AND DUTPUT wa
ES FORMS i (ເນ. АЕ, Ri VARIED IN BARE

|

ÅRER +. T! OMG > EN f
RATT] $E REE ыа

-— |

|
p Ñ... م‎ t

! VDLTAGE-CONTROLLED os ILLATOR Б

+5 то SV I

TT TV ефт | | |
| (CONTROL) ມລີ
-VOLTAGE | |

i i { ! ; Е

i ] ом سب‎ EE ບບບ ະບ ຫນນ — D фае 4
dd d اس‎ E ЕИ p^ -一 一 一 一 -一 一 一 人 一 > . | + | —1 | | |

1 "m I | i І 1 i l І i І | i I

1 |

ສລທ? TO. PROVIDE - VARIABLE _ pur VØLTAGE _ |

m WHEN. LTEŞTING , CIRCUIT... Ба-а ГЕ

|) EE ЗЕ АЕ

m Ll ໃຫ້ຢ 555. OSCIATES ` Ar. A| FREQUENCY ELT |

ЕН

— — Z — ———

DETERMINED ` øy RZ AND. C1. LA | Vor» ເ
APPLIED TO THE INPUT CHANGES THE.
18 ... OSCILLAT!ON | FREQUENCY OF THE. 555. As ` š
wa _THE INPUT ` VOLTAGE (INCREASES! ` mel 1.
H- OSCILLATION | FREQUENCY DECREASES. FOR ່
MORE VOLUME ,| OMIT! Ri AND CONNECT. una Y:
GROUND. жетш 4.7. F : CAPACITOR.. E "ai EA

ski 一 - ~ $--- Ж -一 — --+ - - 一 ES EE Ж -~ = ----+- — mi -4- -- --
A *

Lk

十 一 人

|
|
+

i

] BE |
EF

z

|
en ыз. маа наси w

—— s

š
|
E

ATITA T TT TT TT
| | | | | І І | | I

+ — - I i I
а зни y +... 过- -一 个 一 一 -一 一 一 下 -一 一 和- 一 一 —

| muse GENERATOR ຮື້

-~ 一 一 一 一 和 — ھ‎ = fy 一 一 一 一 -一 - --+---- + — 全 一 -4— +— små

1 [uei EREGUENCY | FI |
` TABLE TD SELECT). аш
IRA | AND IC OKTe | , , | |
CONNECT . PIN 3. m x 77 w
— FREQUE E metek I
APS ON. EN QING . LAGE, к
| —— s AE O 2077 Чата ИШ
| use | AS DIGITAL LOGIC clock PULSE | ETT
GENERATOR, SIGNAL GENERATOR, EP PE E |

时 二 I _ FREQUENCY TABLE 2. КЕТИН

ااا

T| ca Сағ) | Risiok| Ri-100k| xk Er

VU woe MM ສະ ສາ? ກ, ຍອບ TER ສ | Bitre VA едк - хс СУС) SLN E DS
| | аера | чё, າງດ | 5240 | so
pi 10083 | I | 30.450 $040 E 1304 | | , ,

г Гаон+ | 1 1а ера | | ເຟວ | | ЖЕ | | |
li | 109068 I 115309 ) , 1,981 | | 1187 Ы
-———91——- 151214022 | L ). 114 1 121400 , , , ;
| |. ແ |!!! ໄປດ | | | ຂູ! |

L Ila hb
E | | AMPLIFIER

E || mis [ULTRA- SIMPLE | | CIRCUIT MEASURES AUDIO L4
ERE. FREQUENCY | SIGNALS. INPUT SIGNAL _ E H
I | RANGE FROM. 2.5 то 5 volTS. FOR TESI 6 LEA
CONNECT PULSE GENERATOR OM FACING
| PAGE DIRECTLY TO PIN 2 Comt Cf). Rš |
ຫ | | | AND Съ. DETERMINE FREAQVENCY RANGE. see

dii 4 ສອ. ສວ! ເ

Å NOTE NON-LINEAR | ,
RESPONSE AY f

"1 L x 2.) - WER t | € Ju: 4
FREQUENCY Km) жа |

| 4 — + Г Е 9 7i qm на -

ET t о: ШЕ ЧИ ТЕРТЕР F 1 ເ້ | ЖЫ
- 一 I ------+------ -- 4 Er шаал KEN a 4- -一 A À --+-- - --- YT — Tq e lg amme -— ກະວ - + -— چ‎ =4—

| I | { І I | | I i i i i

b. + I4 eT UR. ະ END

«4 i

AUDIO. OSCILLATOR / METRONOME ງທ x

I i
p -- ----+- ——

$-—+-

| $991 | | ,

ແດ. E Fu
(1 -L BLEMENT, |
(UN séD) (wiTHOUT ` ui i

£ INTERNAL | deci Es.
Jc RClITRY) | |]

e —— —

R3 15 OPTIONAL FO БЕР ИН ИЧ

VOLUME CONTROL. Set L ; |
..RÉSISTOR. USE Å າ; b 4 poar

TIDA E LAS Mod 1L i iom TW shop £. Ер
24 +01 ۴ر1"‎ . | 一 II Lat stal ~ aL -+- рага а —— |

[ແເ | Фар. FUNCTION PENI EITHER iii |

B
| | 08 | BOTA OUTPUT . DEVICES, | THE _ pee Z: --+-+ |
| x

— tewes | MORE VOLUME, . Bur. USES. MOREL | |. ded
| CURRENT, USE R3. To REDUCE | VOLUME. | |
HERE | ARE | TYPICAL FRE QUENCIES LBoR | 1. | 1 ° |

|| ານ | SETTINGS of Ё1!: . КЕЕ

F кош. ແ: ‚бї 1 ` METROND ME ເຈາ tb

ເ

--+-- — س س‎ +
AT АА?

Жү"
SS BE E Из E a
е 00 d OI ОБЬ
I | l l
l
i

. TABLE

A
| : | i :
R š 28 ае “+ ч PR
CONTROL

L
JO
4

1
$-
i

به
ມ່‏

C3

Dagi) ,
"Ky IR

må!

ສາ

SER
ЛИ ЖЕ :

£
== =
71
79 š
L
i
$

:
+-
i

or

Fe
四

° -
h
ë
r3

E.

f

1 I!
I i i i - - Е - ee ຈ,
eod ມາຍ — — — —— — * r vaaan om do 4 j
| | | i ເໃ" t І |
{ | f l i
۰ Р — —— ~ — e0 > salons co » past > dans — eo ...
M — — - "
I l À 3 < `
* tu P ` ,
: | | 1 Lin Y V NEAN ү

FD GI PA Pee TNES າສລ = л: າະ ຫພ າຫາ PSP SEE MD SN ຫາ ҮТ ST ОП ຫຼາມ ສາ," T GET RPN рй ຫສ ມ UE ແຊ АДЫ mes າ
„ + KV å > ч Es a 4 Š | i А - 4 < t ! ^, !

— "

— مھ سو‎ .- —— M

inb E24. ——4-- ي‎ ---- < 一 一 — — РЧ

ЕЗ 一 小 一 -一

š: GATED d OSCILLATOR PPEP ZT H ЕА

E E festet

ດ1- POWER

d.i MOSFET) | |
(RADO SHACK |. | —
Ку 1 ) , L.
" OR SIMILAR). ||

— - -+ 4ا - س‎ — ГУРТ ~ 一 一 全 一 一- 一 一 一 一 “一 一 一 一 - |
I М i
i | i І { i
i | t | | | | i
| i |
— س‎ + 一 一 E: 一 一 一 一 一 一 - + -一 -个 -一 全 一 全 一 一 全 ————— -- -- 一 一 全 一 е - 4—4) — ٠ یہ‎
i 4
| i

| | | |
ola —— — — хуа å eg. —ə ə ш ຕະ"? Ф --+---+-- س‎ 17 ЧЕ, UP кте Д -一 E SS. oo —

ms | ເປນ WILL ALLOW You. ЕР =н LIN

жеч

| ME TOME GENERATED BY mé 555 EY ` LI |
| MEANS. OF Аю EXTERNAL LOGIC SIGNAL.
-H

+

—— 1

HE. TRIANGULAR SYMBOL. is. ANY EXTERNAL ` кй!

-+ LOGIC GATE. Ок To SWITCH |THE TONE |. | ma

Ы - JON | AND | QFE ແກ CONNECTING GATE oF

nM 1 тр +V OR. GROUND THROUGH 1м RESISTOR. 11
AND Cl CONTROL TONE FREQUENCY.

101 CAN BE CONNECTED AS А. Switch BLE. — d
анинин ию CIRCUIT, m

| N | TONE BENT TNT can Hia 11. {
AIETE! i i l jpesrSoyEb | gy! Sramd | | LET
irca | | | ELECTRICITY! Do мот . + |
| PM EXPOSED LEADS. — a

|

———

ا ل -

18
4

[| EEE .ມເ“ າ осо с 9 ເ“ a VE ໃ... Е VGS |
— эл» 3 --- F ae L ——— T^ —— os r аф —— +. МР — $ — knip ະ s OEA "hi OG ---+----- = м pen -一 .
i Н г | І

———+—— I>

| M | | | | | |
i qu 4... аф -- — >T —} Ф —— -ф — —4— +---: + +- m. er T.

CHIRP GENERATOR EE 100

4 I 77 d ເເຕ pr gA F * m n
———m - | _
i i I i p | I СЕ }
> * І f -- < -— ເ ' ” А 4 E

i M. € аб E m
—— аф sten

Ea )

aT T

rw um

zm

L———‏ لل
I‏ |

` THIS CIRCUIT (APPLIES BRIEF PULSES | AME:
CURRENT. TO A. PIEZO BUZZER (RADIO SHACK `
215-065 oR SIMILAR). | THIS CAUSES THE | Ë
BUZZER, TD {EMIT Рет GETTING EE
CHIRPS. THE. CIRCUIT MAKES А ລວນ HEA
WARNING! AAE E Bd E SER N i 2754 1 BU

Ё1 GONTROLS RATE OF CHIRPS. OSE 10

FIXED RESISTOR FOR ABOUT 2-3. Eike: BE
PER SECOND. C3 | CONTROLS | DURATION OF HE

|
L- CHIRPS. FOR LONG | DURATION PULSES C WHICH

| BECOME TONE . BURSTS) INCREAS E CB! Хо +4
| 10.22 „Е oR MORE. | REDUCE | VOLUME | າດ 212
«øp ee 100 + 10,000 L RESISTOR | З |

BETWEEN PIN Q AND MEZO BUZZER. ຫ
[mi , USING сав РИ PTORESISTOR FoR Ha

—— — 9

EET

KG |) | SN EI
PTT L-I А aF I i
3 | а ht 1
ar y É gem 1 "d + |
ດງ pus 7 | | | IE |
— AS Аз. REDUCED) THIS CIRCUIT PRODUCES. et [E |
LE . (RESEMELING | PLUCKED VIOLIN) 1, | |
|. STRINGS!) To DRUM AS RL AND 1
| R3 ARE ADTUsTED. FREQUENCY , . |

OF STEPPED OUTPUT DERA ASES. ED
IN PROGRESSIVELY SMALLER ° |
INCREMENTS ASI. RS disi REDUCED T
IN VALUE. | GRAPH SHOWN HERE | |

| 248. TYMCAL FOR. VALUES |. |...
| SKAUN. OK To CHANGE. |
-C1, ce AND R1.

| rn 2.) ແາ 1кй . 18 x KHz |
Ba REVEN oor F |

а +—

5 3 — — ا
Е i i‏

T.

ERIMÉNT ມ
OF Ri, C1, RY

— EXPE

T
R

- STEADY TON

| j
{ ғ
T "C

am mE wt -4 — 一

四 一 -一 一 e р — - ---- 一
--+

+ -- --

(CENTER.
TONE

+
, ---

— — —
I

SE
JE

H
i
rm —
i

Li
--+ = --- ———

l n l | 1 I
ШЕ... ' G "— a å Ф Ыы Mr
| 1

I

I
|
— + -+
| I
|
i
Е
|
+
l
Г

i i
B
| I l
on E — - 一 - ee - -- —-
I I I
i |
— -—9—9— s --4- mem - ee — Å
| H 4 :
á I I I
|
--- -一 全 一 ----<-
` I
а k
`

| er Жк xi БИ ТИЕП ЕТ oke kaa
Bm TN RENI PUE тт ы ااي‎

g" 1 Е" - 1 1 Азы. l Е I Н E i H i I 1 i ! I I l i i
A š É y B ا‎ SOSS | ENG بت‎ A | МИ) S. VEN j ບອກ ທ | rV ເາ... I
| : T i | 一

TONE BURST GENERATOR а

+9 у

WHEN SL 1S. CLOSED, THE SPEAKER EMS
А TONE WHOSE |. FREQUENCY IS DETERMINED
BY RL Аюб С1. WHEN SL. IS OPENED, THE
TONE. CONTINUES . FOR SEVERAL SECONDS, EX |
ME. TIME REQUIRED FOR 60? TO DISCHARGE |
. THROuGH | R4, INCREASE С? TO INCREASE a
BURST DURATION. | — +. | Let |

CLOSE 51

OPEN 51

"MES томе. ом.

rene OFF. š

Lai

—

ແເ: 11-1] [| | | | EF a E A ê 206 a E ЕБ V ECT UD 4
тту ыы чы + LLL EL
i { I i | i i i i Г ;

І

т pey ”
A, -
dii e í . d
ICI PME] TS
4 ы 1
Í l
I

>

VE | |
P 15 |

ب
ET‏
a‏

E
E SÅ

І I

i l l i l l E i l l - l ! l I
—- + 一 全 一 一 一 — 个 +--- — ~ F > sm T | i er og pr i E p t - I
i i i t i I І i i }

Es SOUND - EFFECTS GENE!

ЕТТЕ

i i
€

EX idus

4 一 一 一 ~-

Eu E 555 osciLATES. prune

ວເ | DETERMINED Wem CN JE
| -DUIPUT | CHARGES. ci! ek |
К. olan SECOND! 555 -OSCILLATES АТ

Î FREQUENCY | DETERMINED | BY RY, C3 A
E! mg vbirace AT RIN 5 (ie. mé
| ChARGÉ ом ср). EXPERIMENT — м u | |
Li (SETTINGS | OF Rl AND | R32. | AND | AE. VAI
| of R3 AND. ca ຈະ) BETAL | ານທ ໄຫລ

I
<... — 5. e al e.. : e 4 = ~e
| Бе А
|

4. mis CIRCUIT. WILL DRIVE BOTH VISIBLE ||.
LIGHT AND INFRARED - EMITTING 010065. ` `
L4 二 sd RED, GREEN OR YELLOW LED TO
MAKE | Å | VISIGLE LIGAT FLASHER. USE
NEAR-|INFRARED | EMITTER | TO MAKE

POWERFUL TRANSMITTER. | CONNECT. l1l 1l |
SOLAR CELL , PHOTODIODE! ОЁ PHOTO TRAN SIS TDR EL
Tb. AMPLIFIER, TO RECEIVE | SIGNAL. | 113 |
I - ,
CONNECT PIEZO BUZZER _ E

ACROSS LED) FOR | | | Ey 1%

LIGHT / SOUND DARKROOM - et |

TIME i EL |

REDUCE 1 FOR å Е
FASTER PULSE RATES, |
єй ESPECIALLY WHEN IE NR 3
x INFRARED EMITTER IS 17
LIFT FEEL USED. Kee FGEITIDG | x
I dell ul Er j | STARTEN. IN ELECTRONICS | |
VC Ne ER SALE RE ss рн: БАКЕ. belte Ce

M l | "
ЖЕР o 3 x Tb 8
; i i `
i | ^
à 4 å

ТТ Евай UITIUM
BURRE Ano iata E S ເ). +... >

i І І ' i
р rM RM BÀ — i- + 一 修一 一 一 ~- — ad ;
І I i f ç É + | |

| |
rj LAMP DIMMER - ແພວ

ຊ” ລ: + 103 Бы "ແຣ
| SOME. VERSIONS . а 46
MAY OPERATE _ ÆRE

HE 6а js] T] , ) | |
PbwERED BY “ແຟ. | FERAE
|

[T dat. | 一 二
DK 4

+ -

M ສດ ແມ аа

| | |
四 -十 - مال‎ к“

ms AAA IS A LINEAR ¿AMP DIMMER. +P
IN. |. QPÉRATION, LINE 15551 SWITCHES. . å MDG
ON AND - DEE | "AT А RATE | QETER MED. |
BY RÍ*R2| AND C1, WHEN Qi IS ON, | T
LE NS ALSO ON. THE SWITCHING. RATE 1
AS SO FAST L1 APPEARS TO GLOW E]
CONTINUOUSLY. ` INCREASING THE БЕТШ
RATE INCREASES TME APPARENT- а
SRI HTNEANS - Ей ILL. 1 2 =

1А. Arta тетү ж ШҮН с? ເ
0.5 AMPERE OR 3 WATTS. THEREF -bse
TAN ZRES11 OR SIMILAR POWER FET. |
АТТАСА А 0-220 - -HERT SINK лә ps 155.
+ຊໍ%ຊ55 | HIER S š J |

si 1 ы POSITION | ມ THE. SPEAKER 0
| EMITS) А TONE WHEN LIGHT STRIKES THE ` |
|_| phot NUS | WHEN | Si IS. IN| POSITION ||
| 1 MD". THE SPEAKER | EMITS | A TONE WHEN. THE. T.
s hs BE PHoTo RE SIS TOR. ass NOT | ILLUMINATED, — | 3

|

| —— cos o EUR LEGI 230 8: 9 — -4—

OW | 4 š . <
В m ames s 一 全 mm p

ñ TF j š+
i ; ` |
[ l i
ET -一 一 一 -一 一 十 一 一 一 Pot | а سا‎ es vo | A f -4- -1-

P INFRARED T SECURITY | ALARM | LH

i

| ວ HERE IBRET AFG EE isi | E
42 AF EE GRE LAE A |

i
ИШ ЕСУ sa
TO Е.
l
<. fe ^+ ມາ.

Ji dlc
ກ ໃ |

| фи до | 01 |
FROM EXTERNAL

1 “ພ Í Е Е { Е f d 1 L І Е 1 Е 1 ! T Tf Е
T T1 Em ees авы ҮТҮ . 全 一 一 yas —— ———y —- 二 一 下 一 -一 一 一 ا اا‎ a
| | | p Bra d Nm ost

H ANALOG LIG UT WAVE “TRANSMITTER ,

* Ri CAN. BE ANY
(SENSOR, HAVING Žž
VARIABLE RESISTANCE,
WHEN R1 IS Å
CADMIUM SULFIDE `
(CdS) PHOTORESISTOR,
THE FREQUENCY OF.
TAE. SIGNAL RISES
WITH LIGHT LEVEL.

otis?
Lid | | ແຄ | |

Я. mus. СРТ Posts AN INFRARED- EMITTING |
DODE Ат A | FREQUENCY. DETERMINED BY Ri — |
Е 61. THE RECEIVER ON THE FACING PAGE HARME
RECEWES AND AMPLIFIES THE INFRARED SIGNAL, |
ит. ກາເ ຟ່ CONVERTS | THÉ SicmAL's | FREQUENCY — £ a

t
B-
|
Tr ANTO A. CURRENT WHICH 15 DISPLAYED ON A
t | 011 MA. METER. USE LENSES TO INCREASE
Ж.
--+-
4

MIMS CIRCUIT SCRAPBOOK" (MERAW-HILL, 1983).

` RANGE. FOR FULL DETAILS, SEE "ТАЄ FORREST | Ef
l

уе Бш Же 09 ЦИЙ | L

i; ME Ha ,9 TEST RECEIVER CIRCUIT GAVE 1 Li

| 177-8] NON-LINEAR RESPONSE. E aT LoT T] |

4114 А WHEN. TRANSMITTER . | | LT 211...) ر‎
iW | 1 FreQuENcy ЕхсвебЕр | 1—7 . , | T |
d d 1.3 KHz. ERRA а а Ei
EM. tølt 1. ) | CALIBRATE! RECEIVER | ) l 1!
= | ໆ. ll 1 | NETER | WITH. RI.

ງ РЕН quss se .7 5.9 10 LL a
ae rabfl ER pred “ທຟ | 4

TAPERE | "E [—1

" I i
i : | 1 | ! i '
— 4 — — Á—— Áo mde
一 e i — | +
I i

i i
TT %

T- +-

I

-4

|
Y ACROSS —

" CONNECT

© ----

S FROM
ad
аң i T

i i

۰ wd 一 -一 لے‎

i t i
`

i L

a^ ЗА

(МАГ

TRANSMITTER ON FACING

PAS

DIREC

~ 个 一 一
$

+

ч. чч
i i М !
i
— —À (€
{ I ; i
] { | i j i i
М bM - T -一 一 一 一
} i
t ; i i I А { 4
“ --—$r : Em ຫ E
А 1 i
> ; på - —
i '

CIRCUIT RECEIVES PFM SIG

S

USE
41'

TO

| Two.

te

IN PLACE `
oF 1458

QK.

| I
p——4— -- — h. — —— -- -.- —Ó — - - - ' «аА —+ - - -+ ---- —
---+ Ра - 下 一 一 一 个 — | 4 1 一 一 人 < — + - * i I T

ເເ“ | РҮ? LE | | | | vid

-DC-DC CONVERTER -

+570 + 4V (V.N) - .CAU TION: HIGH
| | VOLTAGE!

D1
11 * 1N^400*4 P
+V
OUT

44

`

120 V WINDING
ແ. 3 V WINDING

Тт}: MINIATURE. (0.3: 12D V PowER TRANSFORMER
(RADIO SHACK! 273-1384 or SIMILAR), y

- - ----+- ---- -+ -

то А TRANSFORMER WINDING. THE INPUT
VOLTAGE (5 THEN BoosTen EY THE . |
TRANSFORMER'S | SECOND WINDING. USE To
POWER NEON LAMPS, PLASMA DISPLAYS, ETC. `
CAUTION: DO мот TOUCH OUTPUT LEADS I (ແຈ BLEEDS
CHARGE FROM C2 WHEN Vin IS RE MOVED.)

THIS CIRCUIT APPLIES А PULSATING າ E

| Е. qok- 1” | | | lI
i: 10 | | NEON . 7... |
k 9 AX LAMP dap LL
{ 8 NP. FLASHER |
2
М
I1 16
dur M
iss а mi) 1o 3D 40. 59 со 70 80 90 100 Шо ^mm |
| od , £3 „Жее.
K p EUR NA S feu LL do d + |
H— tt td 1+—————— 1 kn 3

_ RESISTOR COLOR CODE

BLACK 5 o 1

BROWN ເ? ЖАЮ,

RED Ep. 2 ຮນຍ
ORANGE 3 3 v 1,000
YELLOW 4 4 * 10,000
! GREEN S 5 к 100,009
BLUE ແ ແ х 1,000,000
VIOLET 7 7 X 10,000,000
GRAY 8 8 x 100,000,000
- WHITE qa າ »-

FOURTH BAND INDICATES TOLERANCE (ACCURACY):
б000= +5 4 SILVER=%10% NONE= £205

` OHM'S LAW: v=1r g:vi

I*V/R Р= үт T8

ABBREVIATIONS
N * AMPERE R * RESISTANCE
F = FARAD V = VOLT
I = CURRENT W* WATT
P > POWER П = OAM
M (MEG-) * x 1,000,000
K (KILO=) = x 1,000
m (MiLLI=) = ,ool
л ( MICRO”) = .000 001
|» ^ (NANO-) * , 000 ooo 001
| p C?lco-) = ‚ооо ooo ооо 061

RADIO SHACK, A DIVISION OF TANDY CORPORATION

U.S.A.: FORT WORTH, TEXAS 76102
CANADA: BARRIE, ONTARIO, CANADA L4M 4W5

TANDY CORPORATION

AUSTRALIA BELGIUM
280-316 VICTORIA ROAD PARC INDUSTRIEL DE NANINNE
RYDALMERE. N S W 2116 5140 NANINNE
U.K
BILSTON ROAD
WEDNESBURY, WEST MIDLANDS WS10 7JN

PRINTED IN U.S.A